James mcewen



J. MQEWBN. APPARATUS FOR GENERATING CARBON DIOXIDE. No. 317,823.

(No Model.)

Patented May 12, 1885.

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9 yia 4/ nirnn drains i NT FlFltCEQ JAMES MOEW'EN, OF MANCHESTER,ENGLAND.

APPARATUS FOR GENERATING CARBON DlOXlDE.

SPECIFIQATION forming part of Letters Patent No. 317,823, dated May 12,1885.

Application filed December 29, 1884. (No model.) Patented in EnglandMarch 22,1883, No.1,504.

To all whom it may concern.-

Beit known that I, JAMES MoEwEN, a subject ofthe Queen of Great Britain,residing in the city of Manchester, England, haveinvented newjand usefulImprovements in Generators for Generating Carbonic-Acid Gas or otherGases, (for which I have obtained a Patent in Great Britain, No. 1,504,dated March 22,1883,) of which the following is a specification.

This invention relates to certain improve ments in apparatus forgenerating carbonicacid and other gas, and the purpose thereof is toprovide means for filling, emptying, and washing out the generatorwithout loss of gas and without admitting atmospheric air; to providemeans for automatically supplying the generator with acid upon adiminution in the flow of gas, and to combine with the reservoir anautomatic call,whereby the attendant may be summoned when the reservoirbecomes exhausted, or nearly so.

The invention consists in the several novel features of construction andcombinations of parts hereinafter fully set forth, and then pointed outin the claims.

Referring to the drawings, Figure 1 is a central vertical section. Fig.2 is aside elevation. Fig.3 is a detail elevation partly in section.Fig. 4 is adetail section of the lower portion of Fig. 3. Fig. 5 is ahorizontal section of the lower vessel detached.

In the said drawings, the reference'letter A indicates the generator,having an agitator, B, which is mounted upon a shaft, 0. This shaft hasbearing in trunnions D, which receive screw-caps D, containing packingto make a gas-tight joint. A fast and loose pulley, E E, are mountedupon one end of said shaft to receive belting from any convenient power.

Opening from the bottom of the generator A is a pipe, F, whichcommunicates with the inlet-pipe G and the siphon-pipe J. These threepipes all open into avalve-chamber, F, within which is arranged athree-Way cock, F The inlet-pipe G is curved upward, and upon its end ismounted a charging-vessel, H, for receiving the whiting or othermaterial used in generating the acid. The siphon-pipe J is provided witha swivel-joint, I, by which the end of the pipe may be turned into thepositions shown in Figs. 3 and 4.. The generator is made of lead orother suitable material, and in two parts. For convenience in insertingthe agitator,I prefer to divide-the rounds said vessel at the meetingedges of the upper and lower halves. These flanges are united by bolts,and the trunnions are bound together by nuts S. A gland is formed uponeach cap D,which closely fits the cap and enters the trunnion, as shownin Fig. 1. Above the generator, in any suitable position, is placed thegas-holder. It consists of a lower vessel, L, adapted to contain water,and a reg ulator, K, which rises and falls therein, being guided andretained in true vertical position by a standard, P, rising from thecenter of the vessel L and received by a central tube, 0, connected withthe bottom of the regulator K. A vertical pipe, M, rises from the top ofthe generator A and passes up through the vessel L as high as its top. Adraw-off, N, is carried from the same height down through the bottom ofL, and connected with the ordinary pumps.

When it is necessary to empty the generator A of its contents, the cockF is turned, as shown in Fig. 3, whereby the inlet-pipe G is closed andthe siphon J opened to the generator. The siphon is then turned up untilits open end is brought about on a level with the bottom of the vessel.The generator may now be opened, and the pipe will, when the operationis completed, remain .full of liquid, which prevents the inflow of air.If it becomes necessary to discharge thewhiting or other substance fromthe vessel H and inlet G without carrying it into the generator, thecock F is turned to the position shown in Fig. 4, and the siphon-pipe Jis turned down, when the whole contents of H may be emptied into anysuitable vessel, thereby economizing material and time and facilitatingthe operation of washing out the passages. WVhen it is necessary toreplenish the generator with material from the charging-vessel H, thecock F is turned, as shown in Fig. 1.

Upon one side of the vessel L, at any con venient point, is placed aglass vessel, T, having a pipe, 6, opening from its bottom and enteringthe generator.

Into the upper end of said vessel T is inserted a pipe, 1, connectedabove with an acid-reservoir. To the lower end of said pipe is attacheda valve-chamber, 1, closed at its lower end by a diaphragm, in which isseated a valve, 2. The lower end of this valve has a cross-bar, 3, towhich are connected rods 4, connected above to a bar, 5, which ismounted upon one end of a lever, 5, said lever being fulcruined upon asupport which is adjustable upon the acid-pipe 1, and having its freeend projecting over the top of the regulator K. When the latterdescends, the lever drops, raising the rods 4 4 and opening the valve 2,whereby acid at once flows into the generator. This produces animmediate liberation of gas, which raises the regulator, lifts thelever, and cuts off the flow of acid. The acid-pipe 6 is carried downand then up before entering the generator, inorder that a sufficientbody of acid may alwaysremain therein to balance the pressure in theregulator K. The valve 2 is a double valve seating upon both sides ofthe diaphragm. Thus, when the regulator dropsa sufficient distance, thelever 55 will close the valve and cut off the flow of acid. Thereby,whenthe whiting in the generator is spent, the regulator will sink so far asto effect this operation and prevent a waste of acid.

To call the attention of the operator to this condition, I attach to theregulator K a finger or spring, 7, which rises and falls with it. If theregulator falls this finger strikes the spring 8, which is connected tothe vessel L, and is in connection with any suitable call, by means ofthe rod 9 or other devices. An electric call may be used in thisposition with advantage.

WVhat I claim is- 1. In an apparatus for generating carbonicacid orother gas, the combination,with agenerator, of a charging-vessel, aninlet-pipe, a

siphon-pipe, and a central bottom outlet having a valve-chamber withwhich both the inlet and siphon communicate, and a three-way cock placedin said valve-chamber, substantially as described.

.2. In an apparatus for generating carbonicacid gas, thecombination,with a generator, of a gas-reservoir containing a regulatorwhich rises and falls as the gas accumulates or is removed, anacid-supply pipe entering the generator, and a valve closing said pipeand connected with a lever which is fulcrumed with its free end abovethe regulator, substantially as described.

3. In an apparatus for generating carbonicacid or other gas, thecombination,with a generator, of a reservoir having a rising and fallingregulator, an acid-supply pipe entering the generator, a valve closingsaid pipe and connected by rods with the lever, having its free end overthe regulator, a spring mounted upon a suitable support near saidregulator and connected with a call-bell, and a finger upon thelatter,-which is brought into contact with the spring as the regulatorfalls, substantially as described.

4. In an apparatus for generating carbonicacid or other gas, thecombination,with a rising and falling regulator, of a valve closing anacid-supply pipe, rods operated by a lever to actuate said valve, and avertically-adjustable support upon which said lever is fulcrumed,substantially as described.

In witness whereof I, the said JAMES Mc- EWEN, have hereunto set my handand seal this 1st day of December, A. D. 1884..

JAMES MOEWEN.

WVitnesses:

E. L. BOND,

Solicitor, Manchester. EDMUND CHADWIOK,

Patent Agent, Bolton.

